92 dakota cranks and wont start

No fuel pressure at check port. Could not hear fuel pump energize. Replaced fuel pump and filter. Then restarted and it ran for 10 min and died and now will not restart. Once again no fuel pressure at check port. Replaced fuel pump relay with same results. Any ideas??

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the fuel pump relay contacts may have fused together, remove the relay and see if it stops, if it nuns for10 minutes then stops points to fuel fault, replace the filter then check pressure and flow. if the pressure is low check the fuel regulator and pump.

Without starting engine turn key to ignition position, does pump run for a couple seconds? Should be able to hear it in a quiet atmosphere. If not check fuse, old pump may have blown it. Next step would be to remove Schader valve cap by fuel rail and with a rag being held over a small pick or screwdriver press in the valve core and see if you have any pressure. The better way to check for fuel pressure is to rent/loan a fuel pressure tester from a parts store. Don't start a fire is what I am saying. Let the gas evaporate and dry out. No pressure means pumps not running (or) fuel filter is plugged

Pump does nor know pressure pcm energizes asd. Relay turns on pump for ten seconds to ensure pressure at injectors is correct for initial cranking try cranking engine while hitting tank and see if it tries to start if it does the pump is worn out.

First, verify that there is gas in the vehicle. Next, listen for the pump to energize when you turn the ignition switch to the on position. If you dont hear anything, check the fuel pump relay. Swap it with another one next to it, they are often the same part. If it still doesn't energize, its most likely the pump thats failed. If you hear the pump energize, then the pump pressure needs to be checked. A fuel gauge needs to be connected under the hood on the fuel rail to read system pressure. Verify that its at factory specs. If not, replace the pump.

if you say you replaced the fuel pressure ? "regulator or pump" that was not very clear as to which so i am guessing and the filter but have no fuel to the fuel bar valve either you have no power to the pump or a clogged fuel line or a blown fuse or a short in the power suppluy to the fuel pump if you turn the key to on position without cranking it do you hear a slight humming noise if so the fuel pump is working ..if you do now hear this chances are as i stated above the use of a test light is required to check for power to the pump as wel do you smell any gas =fuel lines are rotted .let ne know what you discover and check all your fuses

ok if the fuel pump is energizing and you can hear it turn on then the pump is working fine and you probably have a restriction. i would replace the fuel filter. when you replace the pump did you replace the strainer on the pump? if not then thats where your problem lies. also could be the fuel pressure regulator also. there is a schrader port on the fuel rail try taking a pen and press down on the core to see if fuel squirts out. or connect a fuel pressure guage to the port and see if you have the right fuel pressure. it should run between 35 and 47 psi